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Abstract
This review summarizes the current status of the research and development of natural ventilation-enabling noise control devices for use on the façades of high-rise residential buildings in congested cities. These devices are important for a sustainable urbanized city, as they are supposed to offer good acoustical protection to citizens, allowing for an acceptable level of natural ventilation inside residential units; energy for mechanical ventilation can then be saved. From the information presented in the existing literature, it is concluded that protrusive devices, such as lintels and balconies, are not effective noise screening devices, even if they are installed with sound absorbers and/or reflectors, under the effect of city reverberation. On the contrary, plenum windows and similar structures, which are plenum structures with a staggered air inlet and outlet, are interesting alternatives that are worth rigorous considerations.
Highlights
Excessive exposure to noise is hazardous to human health
The present review summarizes the continuous effort made in recent years by the research community, to develop natural ventilation-enabling noise control devices that can be installed at, or near to, openings on the façade of a high-rise building
The traffic noise reduction performance of the devices is the main concern of this review
Summary
Excessive exposure to noise is hazardous to human health. Kang et al [1] stated that, “prolonged exposure to noise, even at a level lower than statutory limits, can cause serious physiological and psychological symptoms”. Urban re-development, with the aim of creating residential spaces, is essential for a densely populated city with limited land that is suitable for residential purposes. Such development is making the, already very challenging noise control, even more challenging. Setbacks and extended podia [15] can help reduce noise exposure, but again, these measures tend to sacrifice buildable land areas and spaces, reducing the number of residential units that can theoretically be created. The present review summarizes the continuous effort made in recent years by the research community, to develop natural ventilation-enabling noise control devices that can be installed at, or near to, openings on the façade of a high-rise building.
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